Good point. Must use tempered glass next time if I put up a timber pergola in case got hail....... which happens now and then. (Sorry, off topic).

Just make sure wind turbine don't fail like this:

I just called up a company that does this. For a 4kW installation, they quoted RM40k for everything all-in, including application, installation, testing and commissioning.

From application to testing & commissioning takes 3 months, but they had reports that TNB only started paying a few months after commissioning, and there's some problem with TNB reading the Feed-In meters.

The company tells me that some of their customers have found the system to be outputting higher than the company's initial estimate for them, though their oldest installation is only 1 year-old.

Using Bosch panels rated at 250W peak each (1660 x 990mm) with SMA inverter. For a 4kW install, 16 panels required. Area of 26.3 sq metre or 283 sq ft.

If we take a monthly income of RM460, that's RM5,520 a year. The initial RM40k can be recovered in just about 7.25 years. (How'd I get the RM460/month? Bro ozak gave RM550/month from a 4.8kW installation, so I just factored it down to 4kW).

I see a house a few streets away with a solar install, I will walk over and have a chat with the house owner one day to see what's his experience so far.

Forgot to mention: maintenance is RM1,600 for 2 years - half yearly cleaning and inspection, which I think is quite high!

This post has been edited by kamion: Feb 28 2013, 05:06 PM